Correct answer: (d) Khirghiz – Sudan
Explanation
- A
Pygmy – Congo basin
(a) Pygmy – Congo basin. Mbuti and related pygmy groups inhabit the Congo rainforest. The pair is correctly matched, so it is not the answer to a ‘NOT matched’ stem.
- B
Angami – Nagaland
(b) Angami – Nagaland. Angami Naga are a major Naga tribe of Kohima and adjoining hills. The pair stands.
- C
Ainu – Japan
(c) Ainu – Japan. The Ainu are the indigenous people of Hokkaido (and historically Sakhalin). The pair stands.
- D
Khirghiz – Sudan
(d) Khirghiz – Sudan. Kirghiz/Kyrgyz are a Turkic people of the Tien Shan–Pamir steppe (Kyrgyzstan and neighbours), not of Sudan. This is the unmatched pair and the official key.
Summary. Official key is (d) Khirghiz – Sudan. Pygmies belong to the Congo basin, Angami to Nagaland, Ainu to Japan. Kirghiz are Central Asian, not Sudanese; Sudan’s textbook pastoral names are Baggara, Kababish and similar. Honour the stored letter (d).